Sitting alone in a pond like a tiger, what animal is it to raise spirits under a shady tree?

Frog, "sitting alone in a pond is like sitting on a tiger's back, and keeping your spirits up under a shady tree." That is to say, sitting alone on the edge of the pond is like a tiger crouching, cultivating the spirit in the under the greenwood tree of the tree. Write the image and self-cultivation of frogs.

The frog's body can be divided into three parts: head, trunk and limbs. Frogs have four toes on their front feet and five toes on their back feet. They all have webbed feet. The frog has two bulging bags on each side of its head.

That's its eardrum. Frogs can hear through it. Frog's back is green, smooth, soft and patterned, and its belly is white. It can hide in the grass, make it easier to catch pests and protect itself. Its skin also helps it breathe. Only male frogs have airbags. Frogs hunt with their tongues, and there is mucus on their tongues.

Extended information:

Living habits:

Frogs often inhabit rivers, ponds, rice fields and other places, mainly inhabiting the grass near the water, and sometimes lurking in the water. Most nocturnal activities take insects as the staple food, and also eat some snails, snails, shrimps, small fish and so on. Most of the insects eaten are agricultural pests. It is estimated that a frog can eat 7 insects a day and kill 15, pests a year. Therefore, frogs are beneficial to agriculture and should be protected.

When it gets cold in late autumn, frogs hibernate underwater or in caves. When it gets warm in the next spring, they return to the water to breed. During the breeding season, many males gather in a public area and they keep singing loudly. This is called the ranking pit. In fact, this is a courtship behavior of male frogs, which attracts the opposite sex and forms a mate by singing.

After mating, the female frog begins to ovulate in water, with about 3, to 6, eggs each time. At the same time, the male fish releases sperm into the water. Sperm and egg cells combine in water to form fertilized eggs, which develop into tadpoles after hatching for 4 to 5 days. Tadpoles must live in water, swim with their tails, breathe with their gills and feed on plants such as diatoms and green algae.

After two months' development, tadpoles turned into young frogs, their tails disappeared and their body length was greatly shortened. They began to live on land, and their diet began to change into animal food. It takes about three years for frogs to reach sexual maturity.